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MD5

Abstract

md5() calculate MD5 cryptographic hash function.
md5() は暗号学的ハッシュ関数である MD5 を計算します．

Header file

namespace sstd{
    std::vector<uint8> md5(const uchar* in, size_t in_len);
    std::vector<uint8> md5(const std::vector<uint8>& in);
}

Usage

  • main.cpp 
    #include <sstd/sstd.hpp>

std::string uint8_to_str(const std::vector<uint8>& v){
    std::string s;
    for(uint i=0; i<v.size(); ++i){ s += sstd::ssprintf("%02x", (int)v[i]); }
    return s;
}

int main(){
    sstd::mkdir("./tmp");
    sstd::system("head -c 5m /dev/urandom > ./tmp/rand.txt"); // generate 5 MB random file
    sstd::system("md5sum ./tmp/rand.txt");

    std::vector<uint8> vBin = sstd::read_bin("./tmp/rand.txt"); // read all as a binary
    std::string md5_str = uint8_to_str( sstd::md5( vBin ) );
    sstd::printn( md5_str );

    sstd::rm("./tmp");
}
  • Execution result 
    8c0cd2b4350b7690a24ff635d192c0f2  ./tmp/rand.txt
md5_str = "8c0cd2b4350b7690a24ff635d192c0f2"

Implementation